COINCIDENCE DETERMINATION METHOD AND APPARATUS OF PET DEVICE
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United States of America Patent
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Issued Date -
Jan 10, 2013
app pub date -
Mar 25, 2010
filing date -
Mar 25, 2010
priority date (Note) -
Abandoned
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Abstract
In a coincidence determination processing of a PET device for regarding and counting a pair of annihilation radiations detected within a predetermined time as occurring from the same nuclide, a priority of a line of response to acquire is set and a true coincidence is extracted from multiple coincidences by using information on a detection time difference if a plurality of coincidences are detected with the predetermined time. Consequently, a true coincidence is extracted from multiple coincidences which have heretofore been discarded. This improves detection sensitivity at high radioactive concentration and contributes to an improved dynamic range.
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